Rotary valve and oiling system therefor for explosive-engines.



AVAXWOLOFF. RQTARY VALVE AND mums SYSTEM THEREFOR FOR EXPLOSiVE ENGINES.

APPLICATION F ILED MAR123, I914- RENEWED APR-26,191fn Patented Dec. 28, 1915.

'2 SHEETSSHEET I.

- A. AE WOLOFF. ROTARY VALVE AND omwa SYSTEM THEREFOR FOR EXPLOSIVE ENGINES. APPLICATION FILED MAR. 23, 1914-RENEWEU APR. 26\ 1915. 1,186,397 Patented Dec. 28, 191;).

2 SHEETS-SHEET 2.

ALEXANDER A. WOLOFF, OF LOS ANGELES, CALIFORNIA.

ROTARY VALVE AND OILING SYSTEM THEREFOR FOR EXPLOSIVE-ENGINES.

Specification of'Letters Patent.

Patented Dec. 28, 1915.

Application filed March23, 1914, Serial No. 826,562. Renewed April 26, 1915. Serial No. 24,153.

To all arr/10m it may concern:

Be it known that I, ALEXANDER A. \VOLOFF, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles, State of California, have invented new and useful Improvements in Rotary Valves and Oi'ling System Therefor for Explosive-Engines, of which the following is a specification.

This invention relates to a rotary valve for explosive engines.

It. is the object of this invention to provide a rotary valve and a bearing therefor so constructed and arranged as to maintain the valve in proper alinement.

A further object is to provide means in a rotary valve for multiple cylinder explosive engines in which the valve is composed of a series of connected units, one foreach cylinder, so mounted as to obviate leakage of the gaseous mixtures around the valves.

A further object is to provide a rotary valve and a mounting therefor by which the valve can be readily removed and replaced. fronf'the-side of the engine, and which is so constructed that the valve units may be readily renewed and replaced when exces sively worn.

A further object is to provide means for effectively lubricating the valve.

Other objects will appear hereinafter.

.The invention is illustrated in the accompahying drawings, in which:

figure -1 is a detail longitudinal view of the valve with parts broken away, illustrating the manner of constructing and mounting the same as seen in side elevation. Fig. 2 a detail section of an engine cylinder, showing the invention as applied, and illustratingthe valve in cross section. Fig. 3 is a detail section on the line -it-1 of Fig. 1, showing the roller bearings of the valve.

The valve casings consist of semi-cylindrical channels 9 formed on opposite sides of the engine casing adjacent the upper ends of the cylinders therein and extending longitudinally thereof, and cap plates 10 having corresponding semi-cylindrical channels 11 formed on their inner faces adapted to register with the channels 9 to form a cylindrical valveseat; the cap plates 10 being removably secured in place on the engine cyl inder by means of cap screws 12 or in any other suitable manner. The cylindrical valve casing formed-by the channels 9 and 11 extends throughout the length of the engine caslng and is open at both ends-and} may extend throughout the length of the? gine cylinders are arranged in several units.

For the purpose of clearness, the description of the parts will now be confined to the valve section of one side of one unit of the engine, as illustrated in Fig. 1, as the other sections correspond thereto, except as to their arrangements in relation to the engine casing.

Mounted within the valve casing are a plurality of cylindrical bushings 14:; a bushing 14; being provided for each engine cylinder, and formed with diametrically opposite longitudinally extending openings 15 formed in its walls on a horizontal plane, which register with ports 16 leading to the interior of the engine cylinders 17 on one. side of the bushing and communicating with the openings 18 leading to the manifold passage 19 formed in the cap 10 communicating either with the source of explosive niixture supply, as a carbureter, on the intake side of the engine and communicating with the ex haust pipe on the opposite sideof the engine.

Revolubly mounted within each 1 of the bushings 14 is a cylindrical rotary valve member 20 having an elongated longitudinally extending slot 21 passing diametrically therethrough adapted to be moved into register with the ports 15 to open communication between the interior of the cylinder 17 and the passage 19 on rotation of the valve member.

Each of the cylinders 20 is formed with an annular flange or hub 22 on its opposite ends concentric with the axis thereof, which hubs are adapted to receive the ends of studshafts 23, which, adjacent the cylinder valves, are connected together; the engagement between the hubs 22 and the shafts 23 being effected by means of tapered pins 24 which pass through the hubs and studshafts, as particularly shown in Fig. 1.

As a means for retaining the cylinder valves 20 and the bushings 14. in proper relation to each other, cap disks 25 having .60 vided into several portions, where the encentral openings for the reception of the stud-shafts 23 are secured to the ends of the bushings 14 by means of screws 26 or in I the endo'f the outermost valve and geared 1 having upwar 26 adapted'to a by the port for the any other suitable manner the ca disks 25 projecting sun or flanges t against the ends of the cylinder valve 20 andencompass the hubs 22 contiguous thereto, thus serving the double function of preventing longitudinal movement of the bushings and the cylinder valves in relation toreach other and guard- 24 to prevent their acciing the tapered pins I dental disengagement. The cylinder valves 20 are thus securely connected together in alineinent and, being revoluble in the bush- .ings 14 which are clamped in position against movement in the recesses 9 and 11 capslO, are capable of being rotated in'unison.

,The rotation of .the valves is effected through a short shaft 27 connecting with to the crank shaft 8 through suitable gearing and shaftingmounted in the housing 28 at the end of the engine cylinder. As a means for providing a roller bearing supvalve members to obviate frictional wear between the valves and the bushings, the end plates 26' at the outer ends of throughout;

bushings 14 are formed with the outermost v annular flanges 29 spaced from the studshaf ts 23 or shaft 27 to form an annular race-way 30 for a series of taper roller bearings 31; the race-way nd bearings being incased by means of en plates 32 secured on flanges 29.

The cylinder valves are of equal diameter their length and are of sufficiently smaller diameter than the interior diameters of p, the bushings 14 as to afford a clearance therebetween to allow for expan- 7 sion and contraction of the valve without "binding and at the same time form 611 distributing space throughout the periphery of the cylinder valves to which .a-lubricating oil is delivered through apertures 33 in the V bushings 13 at their highest-point and comf municating with a perforated'oil feed pipe :34: interposed between the cap 10 and the engine casing in, the recess in the latter and connecting with an oil supply pipe 35- lead ing from any source of supply through i check valves 36 which prevent back presga'ses between the valve members and thesure from forcing the oil back too far from their ends and the ends of the passages 21 and bearing againstthe inner peripheries of the bushings 14,

Byconstructing a rotary valve as herein.

casing, a

set forth access to the valve may be readily had by removing the cap plate 10 and the valves may be easily removed from their" casing, and in event any one of the valve sections :orbllshings becomes damaged or worn it can be readily replaced without necessitating the removal of the entire valve.

In' application of the invention here "shown, separate valves are provided for controlling the intake of explosive mixture therefrom; a valve being provided on each side of the engine cylinders for this purpose as shown in Fig. 2; the passages 21 and the ports 16 being so proportioned in relation to each other as to permit of the usual cycle of operation, as is common in rotary valve construction.

' What I claim is:

1. In a rotary valve for internal combustion engines, a valve casing formed of se arable parts having registering semi-cylin rical channels on their adjacent faces, a plurality of tubular bushings in said casing, a rotary valve member in each of said bushings, stud-shafts connecting the adjacent valve members, means on said bushingsen gaging the ends of the valve members to retain the bushings and valve members against longitudinal movement in relation to each other. y

2. In a rotary valve for internal combustion engines, a valve casing, a plurality of separate alined bushings arranged in said dylindrical rotary valve member in each f of said bushings having an external diameter less than the internal diameter of the bushings to form a clearance there between, disks attached to the ends of the bushings and contacting the ends of the valve members, and means connecting adjacent valve members through said disks.

3. In a rotary valve for internal combustion engines,a valve casing, a plurality of alined bushings in said casing having oppositely disposed ports therein, a rotary valve member in each of said bushings formed with a passage extending diametrically therethrough adapted to register with the ports in the bushings,.hubs on the ends of said valve members, stud-shafts detachably connected to said hubs, andend disks encircling the stud-shafts and connected to the ends of the bushings.

4. In a rotary valve for internal combustion engines, a valve' casing, a plurality of alined bushings in said casing having oppositely disposed portsthcrein, a rotary valve member in each of saidbushingsformed with. a passage I extending diametrically therethroughyadapted to register with the ports inthe bush ngs, hubs on the ends of said valve members, stud-shafts detachrtbly connected to said hubs, end disksencircling the stud-shafts and connected to the e'nd of the bushings, and annular flanges on said i teegaee disks engaging the encls of the vehemen bers and encompassing close proximity thereto.

5. The combination of a plurality of alinecl rotary valves, separate bushings encircling eaeh of the valves having per-fore tions formed therein, a casing encompassing the bushings, a perforated oil feecl pipe in the casing for cleliverin lubrieating'oil to the perforations in the oushings, an oil supply pipe leading to the feed pipe, and

the hubs thetetin' check valves interposed between the feed pipe'and supply pipe for preventing back flow of the oil. Y

ALEXANDER A. WOLOFF.

Witnesses:

RALPH W. AVERY, H. R. STAPLES. 

